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Finding the Fourth Proportional to 152.78, 228.04 and 134.56

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Solution

The fourth proportional to 152.78, 228.04 and 134.56 is: 200.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    152.78 : 228.04 = 134.56 : x
  2. Step 2: Convert to fraction form
    152.78/228.04 = 134.56/x
  3. Step 3: Cross multiply
    152.78x = 228.04 × 134.56
  4. Step 4: Simplify right side
    152.78x = 30,683.25
  5. Step 5: Solve for x
    x = 30,683.25/152.78
  6. Step 6: Final answer
    x = 200.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.